12312973 has 2 divisors, whose sum is σ = 12312974. Its totient is φ = 12312972.

The previous prime is 12312959. The next prime is 12312991. The reversal of 12312973 is 37921321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12299049 + 13924 = 3507^2 + 118^2 .

It is a cyclic number.

It is not a de Polignac number, because 12312973 - 2⁵ = 12312941 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12312943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156486 + 6156487.

It is an arithmetic number, because the mean of its divisors is an integer number (6156487).

Almost surely, 2^12312973 is an apocalyptic number.

It is an amenable number.

12312973 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312973 is an equidigital number, since it uses as much as digits as its factorization.

12312973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 28.

The square root of 12312973 is about 3508.9846109665. The cubic root of 12312973 is about 230.9161505487.

The spelling of 12312973 in words is "twelve million, three hundred twelve thousand, nine hundred seventy-three".